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226997 (2004 XA77)
Classification: Main-belt Asteroid          SPK-ID: 2226997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05275656853824828 4.0104e-08  
a 2.775127438664228 2.5543e-08 au
q 2.628721237743965 1.1619e-07 au
i 5.396968275766879 4.0836e-06 deg
node 95.48651248689744 6.278e-05 deg
peri 330.954152268658 8.4992e-05 deg
M 138.0254005088852 5.9262e-05 deg
tp 2458353.090095379347
(2018-Aug-22.59009538)
0.00027453 TDB
period 1688.584599676141
4.62
2.3313e-05
6.383e-08
d
yr
n .2131963065806981 2.9435e-09 deg/d
Q 2.92153363958449 2.6891e-08 au
  Orbit Determination Parameters
   # obs. used (total)      475  
   data-arc span      7477 days (20.47 yr)  
   first obs. used      1999-11-05  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56038  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 10:31:40  

Additional Information
 Earth MOID = 1.64427 au 
 Jupiter MOID = 2.2421 au 
 T_jup = 3.327 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO433485  
diameter diameter 4.869 km 0.246 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226997 (2004 XA77)          Discovered 2004-Dec-10 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2004 XA77 = 2001 DC26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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